keys (original) (raw)

Obtain all indices.

Alternatives: ikeys, keys.
Similar: keys, values, entries.

function keys(x) // x: an array

const xarray = require('extra-array');

var x = [1, 2, 3]; xarray.keys(x); // → [ 0, 1, 2 ]

References

• Array.keys() : MDN Web Docs